Title:
CLOSED-CELL TANNIN-BASED FOAMS
Document Type and Number:
WIPO Patent Application WO/2012/162656
Kind Code:
A3
Abstract:
Disclosed are foam compositions and processes to form closed-cell tannin-based foams. The process comprises forming an agglomerate-free solution comprising a tannin, a first monomer, a second monomer, and water, wherein the first monomer comprises formaldehyde, paraformaldehyde, furfural, glyoxal, acetaldehyde, 5-hydroxymethylfurfural, acroleim, levulinate esters, sugars, 2,5-furandicarboxylic acid, 2,5-furandicarboxylic aldehyde, urea, difurfural (DFF), or mixtures thereof, and the second monomer comprises furfuryl alcohol, glycerol, sorbitol, lignin, or mixtures thereof. The process also comprises mixing one or more blowing agents with the agglomerate-free solution to form a pre-foam mixture and mixing an acid catalyst with the pre-foam mixture to form a foam composition. The process comprises adding a surfactant to at least one of the agglomerate-free solution, pre-foam mixture, or the foam composition. The process further comprises processing the foam composition to form a tannin-based foam.
Inventors:
COBB MICHAEL W (US)
GALANTE VINCENT (FR)
HARMER MARK ANDREW (US)
KAPUR VIVEK (US)
WILLIAMS SHARLENE RENEE (US)
GALANTE VINCENT (FR)
HARMER MARK ANDREW (US)
KAPUR VIVEK (US)
WILLIAMS SHARLENE RENEE (US)
Application Number:
PCT/US2012/039687
Publication Date:
August 28, 2014
Filing Date:
May 25, 2012
Export Citation:
Assignee:
DU PONT (US)
COBB MICHAEL W (US)
GALANTE VINCENT (FR)
HARMER MARK ANDREW (US)
KAPUR VIVEK (US)
WILLIAMS SHARLENE RENEE (US)
COBB MICHAEL W (US)
GALANTE VINCENT (FR)
HARMER MARK ANDREW (US)
KAPUR VIVEK (US)
WILLIAMS SHARLENE RENEE (US)
International Classes:
C08J9/12; B32B5/18
Other References:
G TONDI ET AL: "NATURAL TANNIN-BASED RIGID FOAMS AS INSULATION FOR DOORS AND WALL PANELS", MADERAS. CIENCIA Y TECNOLOGĂA, vol. 10, no. 3, 1 January 2008 (2008-01-01), XP055046154, DOI: 10.4067/S0718-221X2008000300005
TONDI G ET AL: "Tannin-based rigid foams: Characterization and modification", INDUSTRIAL CROPS AND PRODUCTS, ELSEVIER, NL, vol. 29, no. 2-3, 1 March 2009 (2009-03-01), pages 356 - 363, XP025951523, ISSN: 0926-6690, [retrieved on 20080909], DOI: 10.1016/J.INDCROP.2008.07.003
TONDI G ET AL: "Tannin-based rigid foams: Characterization and modification", INDUSTRIAL CROPS AND PRODUCTS, ELSEVIER, NL, vol. 29, no. 2-3, 1 March 2009 (2009-03-01), pages 356 - 363, XP025951523, ISSN: 0926-6690, [retrieved on 20080909], DOI: 10.1016/J.INDCROP.2008.07.003
Attorney, Agent or Firm:
SANTOPIETRO, Lois, A. (Legal Patent Records Center4417 Lancaster Pik, Wilmington Delaware, US)
Download PDF: